Feeding mechanism



PII 30,1935 l.. G'UILBAULT 1,999,836

FEEDI NG MECHANI SM Filed oct. 29, 1954 i@ 1L' zl Patented Apr. 30, 1935UNITE-D sur14:s,

Y Ludger Guilbault, Montreal, Quebec,V Canada, as-

signer. te .'If. R Gelinas, liftcntreai,l Quebec,V

Canada v Application October 29, 1934, Serial No. 75),A'K75 c onine.' i('Ci; 2714-32) The present invention pertains to valf/novel printingmechanism designed primarily for cancelling stamps on envelopes and postcards, but also useful for other small printing jobs.-V

The principal object of the inventionv is to provide a simple andinexpensive device of character which is positive inv its operation andwhich requires very little attention.l The invention resides primarilyin the means for feeding the Work to the printing roll, This mechanismembodies a pairrof pistons,` one Within4 the other, the outerpistonbeing slidable Within a xed outside cylinder. From the outerpiston extends a nozzle or nipple through a :slot inthe cylinder,

and thisfnipple carries a suction cup adapted to engage the Work, onelsheet at' a time, and deliver it to the printing roll.

A suction is created in the., cuter piston and the nipple by the actionof the inner'piston vby reasonI of mechanism adapted to move bothpistons simultaneously in the same direction to and from the printingroll, while moving the inner piston at a higher speed than the outerpiston, thereby rarefying a closed volume in the outer piston during thestroke towards the printing roll.

The invention is fully disclosed by way of example in the followingdescription and in the accompanying drawing in Which Figure l isa plansection of the machine, and

Figure 2 is a vertical section thereof.

Reference to these views will now be made by use of like characterswhich are employed to designate corresponding parts throughout.

In Figure l the numeral l designates in general the iixed frameconstruction on which the machine is built. To this structure is secureda cylinder 2 by means of lugs 3 and bolts 4.

Embodied in the xed structure of the machine is a vertical plate 5having a slot S as shown in Figure 1, for a purpose which Will presentlyappear. There is another vertical plate 'l arranged vertically at aright angle to the plate 5. One

of the vertical edges 8 of the plate 'l isspaced slightly from the planeof the plate 5 at a distance equal to the thickness of the envelopes orother articles operated upon bythe machine.

The cylinder 2 contains a piston Q in the form of a hollow slidablecylinder having a nozzle or nipple l extending therefrom through a slotH in the cylinder 2. Adjacent to the slot il isV the previouslymentioned slot t in the plate 5, and the latter slot receives the end ofthe nipple IU. On this end is fitted a suction cup i 2 il which -isdriven bythe cam l5 for picking lup singly the articles placed againstthe Wall 5 asvJill presently appear. v

In Athe frame of the machine is journaled an operating shaft Siwhichiisdrivenin anysuitable manner, This shaft carriesa pair of cams iii andi,l'former being joined by a link i6 to-the 'piston 9 for-reciprocating thesame in the cylinder 2. This piston 9 contains another' piston through alink or connecting rod i8.

Another-shaft-EQ parallel to the `shaft f3 carries an inking o-rprinting roll '29, and the two shafts arejoined by sprocket Wheels andachain '2i' as shown in AFigure 2. Adjacent to the roll 2d is apressureroll 22 spaced slightly therefrom at a suitable distance forreceiving articies that are passedacross the edge 3- of partition l. l

inthe operation of the device a stack ofenvelopes crsheets isplacedverticallyvand edgewise on table '23 embodied'in the iixed sti'ucf tureof themachinef The'stack is-pressed to- Ward the vertical wall 5' andntted endwise against the vertical Wall l. As the shaft i3 turns, thepiston s is oscillated in the cylinder 2, and the piston il isoscillated Within the piston Si in the same direction and at a greaterspeed as may be seen by the position of the cams ill and i5 in Figure 2and by the fact that the cam Iii is larger than the cam i6. Due to thegreater speed of the piston 'i, a suction is created in the piston 9 andnipple i6 on the movement to- Wards the roll 2?, whereby thenearest'envelope or sheet 2d is drawn into Contact With the suction cupl2 and held thereby. The simultaneous movement of the piston 9 andnipple l@ carries the member 2S across the edge 8, which is properlypositioned for this purpose vas previously described, and between theprinting roll 29 and the pressure roller 1?;2. f

The roll 2li may be adapted' for cancelling postage stamps, in whichcase the envelopes or post cards are preferably so mounted on the tableously, the roll E@ may be adapted for various kinds of printing, and theroller ,22 is at all times posi-V tioned to exert the proper pressure onthe sheet in the direction toward the roll 20.

Although a specific embodiment of the invention has been illustrated anddescribed, it will be understood that various alterations in the details'r that the stamps are nearer the Wall '3. Obviface contact with thearticles to be printed, a fixed cylinder near said wall, said wall andcylinder having co-extensive slots adjacent to each other, a hollowpiston in said cylinder, a nipple extending from said piston into saidslots, an-

, other piston slidable within the iirst piston, a

printing roll, and means for oscillating said pistons at unequal speedsin` the same direction towards and away from said printing roll, the

second piston traveling faster than the rst to-V tending frorn saidpiston into said slots, another piston slidable within the first piston,a printing roll, said wall being substantially tangent to said roll,another wall perpendicular `Yto the rst wall and spaced slightly fromthe plane of the iirst wall, and means for oscillating said pistons atunequal speeds in the same direction towards and away from said printingroll, the second piston traveling faster than the iirst towards saidroll, whereby to create' a suction in said nipple while travelingtowards said roll.` n.

3. In a printing machine, a fixed wall for surface contact with thearticles to be printed, a iixed cylinder near said wall, said wall andcylinder having co-extensive slots adjacent to each other, a hollowpiston in said cylinder, a nipple extending from said piston into saidslots; another piston slidable within the rst piston, a printing roll, arotatable shaft,V unequal cams carried by said shaft and connectedrespectively to said pistons and so related as to move' said pistonssimultaneously in the same direction to and from said roll, the secondpiston moving faster than the first piston towards said roll,

whereby to create a suction in said nipple while moving towards saidroll.

4. In a printing machine, a iixed wall for surface contact with thearticles to beprinted, a fixed cylinder near said wall, said wall andcylinder having co-extensive slots adjacent to each other, a hollowpiston in said cylinder, a nipple extending from said piston into saidslots, another piston' slidable within the first piston, a printingroll, said wall being substantially tangent to said roll, another wallperpendicular to the first wall andspaced slightly from the plane of thefirst wall, a rotatable shaft, unequal cams carried by said shaft andconnected respectively to said pistons and so related as to move saidpistons simultaneously in the same direction to and from said roll, thesecond piston moving faster than the first piston towards said roll,whereby to create a suction in said nipple while moving towards saidroll.

5. In a printing machine, a fixed cylinder having a slot in its wall, ahollow piston in said cylinder, a nipple extending from said piston intosaid slot, a printing roll, means for oscillating said piston to andfrom said roll, means for producing suction in said piston whiletraveling towards said roll, and suction-operated holding means forengaging the articles to be printed.

6. In a printing machine, a fixed wall for surface contact with thearticles to be printed, a fixed cylinder neark said wall, said wall andcylinder having co-extensive slotsadjacent to each other, `a hollowpiston in said cylinder, a nipple extending from said piston into saidslots, a printing roll, means for oscillating said piston to and fromsaid roll, means for producing suction in said piston while travelingtowards said roll, and suction-operated holding means for engaging thearticles to be printed.

Y LUDGER GUILBAULT.

